Someone in one of the Facebook groups said their Toyo Open Country A/T III LT285/70R18's fit in the spare location, those are spec'd at 33.7". Either his spare is really aired down or some of these measurements are off.it looks like the K03 your installing for a spare is 33.2 inches in diameter. I wanted to install 5 Mickey Thompsons Baja Boss’s that measure 33.4. That’s not looking good for me. Might have to switch to a different tire that measures at 33 inch max. Really wanted to do all 5 if I have a flat and can do the rotation.